/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.operator;

import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.Page;
import com.facebook.presto.spi.PageBuilder;
import com.facebook.presto.spi.type.Type;

import javax.annotation.Nullable;

import java.util.List;

public interface PageProcessor
{
    int process(ConnectorSession session, Page page, int start, int end, PageBuilder pageBuilder);

    /**
     * @return filtered and projected page, null if all positions are filtered
     */
    @Nullable
    Page processColumnar(ConnectorSession session, Page page, List<? extends Type> types);

    Page processColumnarDictionary(ConnectorSession session, Page page, List<? extends Type> types);
}
